Pneumatic water-raising device



2 SheetsSheet 1.-

(No Model.)

B. PITOHER' & 'E. H. SARGENT.

PNEUMATIC WATER RAISING DEVICE.

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(No Model.) 2 Sheets8heet 2. E. PITGHER 8v E. H. SARGENT. PNEUMATIC WATER RAISING DEVICE.

Patented'Nov. 9, 1897.

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ATTORNEYS.

WITNESSES:

UNITED STATES PATENT OEE cE.

EDMUND PITOHER, OF KEENE, AND EDMUND HENRY SARGENT, OF

SUNAPEE, NEW HAMPSHIRE.

PNEUMATIC WATER-RAISING DEVICE.

SPECIFICATION forming part of Letters Patent No. 593,431, dated November 9, 1897. Application filed October 1,1896. Serial No. 607,518. (No model.)

To all whom it may concern.-

Be it known that we, EDMUND PITOHER, of Keene, in the county of Oheshire,and EDMUND HENRY SARGENT, of Sunapee, in the county of Sullivan, and State of New Hampshire, have invented a new and Improved Pneumatic "W ater-Raisin g Device, of which the following is a full, clear, and exact description.

The invention relates to windmills and other motors used for raising water from wells and other sources; and its object is to provide a new and improved waterraising device which is simple and durable in construction and arranged in such a manner that the motor can be located at any desirable distance and height from the water and the pump.

The invention consists of certain parts and details and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a side elevation of the improvement. Fig. 2 is an enlarged side elevation of the pneumatic pump with parts in section. Fig. 3 is a plan view of the same with parts in section. Fig. 4 is an enlarged transverse section of the air-supply pipe, its valve, and connections; and Fig. 5 is a similar view of the same with the valve in a different position.

The windmill or other motor is connected with an air-compressor A of any approved construction, so that when the windmill is in motion air is compressed by the said air-compressor and forced out of the same into the compressed-air-supply pipe 13, containing a reservoir 0 and a valve D, which latter controls the flow of compressed'air to a flexible pipe E, connected with a tank F, forming part of the pneumatic pump. The valve D also serves to connect the said pipe E with an airdischarge pipe G at the time the pipes B and E are cut off from each other, as illustrated in Fig. 5.

The valve D is automatically shifted to the positions mentioned by the rising and falling of the tank F, and for this purpose the stem of the valve is provided with an arm D, engaging at its free end a loop D secured to the top of the tank F. It will be seen that when the tank F is in a lowermost position the valve D is open to connect the supply-pipe B with the flexible pipe E and tank F, and when the tank rises it imparts a swinging motion to the lever D to change the valve D, so as to disconnect the pipes B and E and to connect the latter with the air exhaust or discharge pipe G, as shown in Fig. 5.

The tank F of the pneumatic pump is submerged in water, and the said tank is in the form of a closed vessel and is fitted to slide vertically on suitable guide-rods F, erected on a suitably-constru cted frame H. In the bot- .tom of the tank F is arrangedan inlet-valve I, and the said tank is provided near its bottom with a water-discharge pipe I,as is plainly shown in Figs. 2 and 3. The discharge-pipe 1 leads to a reservoir or other place at which the water is to be pumped.

The tank F is adapted to be locked temporarily in either a lowermost or uppermost position, and for this purpose we provide the upper end of the tank with lugs F adapted to be engaged by weighted levers J, fulcrumed on the frame H and adapted to swing outwardly, so as to permit the tankF to rise, as hereinafter more fully described. Similar weighted levers K, fulcrumed on the frame H, engage with friction-rollers K, in vertical brackets F held on the outside of the tank F, so that when the latter moves into an uppermost position the weighted levers K swing downward and the friction-rollers rest on the under side or bottom of the said tank to hold the latter in an uppermost position until it has sufficiently filled with water to overbalance the weighted levers K.

The operation is as follows: When the tank F is in a lowermost position and filled with water and the valve D opens, then the compressed air from the supply-pipe 13 passes into the upper end of the tank F and forces the water out through the valve dischargepipe I to the reservoir or other place at which the water is to be pumped. When the water is discharged from the tank F and filled with compressed air, then its buoyancy is such as to rise, and in doing so the position of the valve D will be changed to cut off the pipe B from the pipe E and to connect the latter with the outlet-pipe G to permit the comvalve I will be opened by the water in the well, and consequently water will flow into the tank F, so as to fill the same. After heing filled with water the weight of the tank causes the latter to descend, and this movement of the tank causes a reversion of the valve D to cut ofi the pipes G and E and to again connect the air-supply pipe B with the pipe E and the upper end of the tank F. The above-described operation is again repcated.

Now it will be seen that by the arrangement described the pneumatic pump may be located any desired distance and depth from the motor and air-compressor, and a very small pipe B may be employed for conveying the necessary amount of compressed air to the tank F and forcing the water contained therein to the desired height. It will further be seen that the pneumatic pump is very simple and durable in construction, not liable to get out of order, and all its parts are accessible for repairing and other purposes.

Having thus described our invention, we claim as new and desire to secure by Letters Patent L A pneumatic water-raising device, comprising a frame, a tank having vertical move ment in said frame, the saidtank being provided with 'a water-inlet and a water discharge, an air-supply pipe connecting the said tank with a source of compressed air, a valve contained in the said pipe and automatically shifted by the movement of the said tank to connect the pipe with the tank to admit the compressed air to the latter, or to connect the tank with the outer air to discharge the air from the tank, weighted levers arranged to engage the top of the tank for temporarily locking the tank in the lowermost position, and similar weighted levers arranged to engage the bottom of the tank for temporarily locking the tank .in the uppermost position, substantially as set forth.

2. A pneumatic water-raising device, comprising an air-compressor adapted to be driven from the motor, a frame, a tank adapted to be submerged in Water and fitted to slide ver tically in the said frame, a compressed-airsupply pipe connecting the said tank with the saidair-compressor, a valve contained in the said pipe, the stem of the said valve being provided with an arm engaging at its free end a loop at the top of the tank, whereby the said valve is automatically operated by the movement of the said tank in one direction to connect the said air-supply pipe and tank, and by the movement of the tank in the opposite direction to cut off the air-supply pipe and connect the tank with an air-discharge pipe, and weighted levers fulcrumed on the frame and adapted to engage the tank to temporarily lock the same in an uppermost or lowermost position, substantially as set forth.

3. A pneumatic water-raising device, comprising an air-compressor adapted to be driven from the motor, a tank constructed to be submerged in the water'and fitted to slide vertically, a compressed-air-supply pipe connecting the said tank with the said air-compressor, a valve contained in the said pipe and controlled'from the said tank, to cut off the supply-pipe and tank, and to connect the latter with an air-discharge, weighted levers arranged to engage the top of the tank for temporarily locking the tank in the lowermost position until the buoyancy of the tank overcomes the weight of the levers, and similar weighted levers arranged to engage the bottom of the tank for locking the tank in the uppermost position until it has sufficiently filled with water to overbalance the said weighted levers, substantially as set forth.

4. A pneumatic water-raising device, comprising an air-compressor adapted to be driven from the motor, a tank adapted to be submerged in the water, a frame on which said tank is fitted to slide vertically a compressedainsupply pipe connecting the said tank with the air-compressor, a valve contained in the said pipe and controlled from the said tank to out off the supply-pipe and tank, and to connect the latter with an airdischarge, weighted levers fulcrumed on the frame and adapted to swing over the tank to engage the top thereof and hold the same in the lowermost position, and-weighted levers fulcrumed on the frame and adapted to swing downward and engage the under side or bottom of the tank when the latter is in an uppermost position, whereby the tank is temporarily locked in an uppermost or lowermost position, as set forth.

EDMUND PITOHER. EDMUND HENRY SARGENT.

lVitnesses to the signature of Edmund Pitcher:

lllAE E. PITCHER,

MARY A. CRosBY.

WVitnesses to the signature of Edmund- 

